Home / 87,129,219.40-130,693,829.10-83,161,126.60

Finding the Fourth Proportional to 87,129,219.40, 130,693,829.10 and 83,161,126.60

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Solution

The fourth proportional to 87,129,219.40, 130,693,829.10 and 83,161,126.60 is: 124,741,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,129,219.40 : 130,693,829.10 = 83,161,126.60 : x
  2. Step 2: Convert to fraction form
    87,129,219.40/130,693,829.10 = 83,161,126.60/x
  3. Step 3: Cross multiply
    87,129,219.40x = 130,693,829.10 × 83,161,126.60
  4. Step 4: Simplify right side
    87,129,219.40x = 10,868,646,067,623,862
  5. Step 5: Solve for x
    x = 10,868,646,067,623,862/87,129,219.40
  6. Step 6: Final answer
    x = 124,741,689.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.